... contact, small specific gravity, high mass transfer efficiency and so on.Application of Plastic pall ring:Plastic Pall ring can ... : PE, PP, RPP, PVC, CPVC, PVDF, PTFE, and HDPE.Size: 5/8" (16mm); 1" (25mm); 1.1/2" (38mm); ... 2" (50mm); 3" (76mm).Technical data of Plastic pall ring ... Φ7676×76×2.6730.9294193060 Dia.5/8", 1", 1.5", 2", 3" Plastic pall ring